import java.util.*;
import java.io.*;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		PrintWriter ou = new PrintWriter(System.out);
		long a = Long.parseLong(sc.next());
		long b = Long.parseLong(sc.next());
		long t = a % b;
		while(t != 0){
			a = b;
			b = t;
			t = a % b;
		}
		if(Math.sqrt(b) % 1 == 0) ou.println("Odd");
		else ou.println("Even");
		ou.flush();
		sc.close();
	}
}